Railway safety system.



J. Komvl.y RAILWAY SAFETY SYSTEM.

APPLXOATXON FILED 001214, 1907 Patented Dec. 15, 1908.

2 SHEETS-SHEET 1.

J. KOVAEVI.

RAILWAY SAFETY SYSTEM.

APPLICATION IILBD OUT. 14, 1907 906,636. Patented Dec. 15, 190s,

2 SHEETS-SHEET 2,

JANK() KOVAEVI, OF YOUNGSTOWN, OHIO.

RAILWAY SAFE TY SYSTEM.

ne. sie/esse,

Syecicaton of Letters Patent.

Patented Dec. 15, 1908.

Application led October 14, 1907. Serial No. 397,364.

T o all whom it may concern:

Be it known that I, JANKO Kovacvic, citizen of the Unite-d States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful lm rovements in Railway Safety Systems; an' I do hereby declare the following to be a full, clear, and exact descri )tion ol` the same, such as will enable others slrilled in the art to which it appertains to make and use the same.

This invention relates to a novel automatic electric safety system for railways, thc object being to provide simple and ellicient means for the revention of collisions, and consists in the eatures of Construction and combinations of parts hereinafter fully dc scribed and claimed.

ln the accompanying drawings illustrating this invention: Figure lv is a plan view of a part of a railway including diagrammatic views showing thc electric circuits controlling safety appliances on the train, and electrically controlled appliances controlling circuit closing means on the railway. Fig. i2- is a diagrammatic rear elevation of a locomotive equipped with safety appliances and showing the circuit closing means on the railway controlling the circuit through the said safety appliance. Fig. --3- is a fragmentary detail vlcw of an clcc tro-magnetic coupling device. employed. Fig. -4- is a similar view of a circuit closer cm loyed.

he object of my invention is to provide on a railway, means whereby trains are pre vented from colliding by automatically electrically controlled means and. are also placed partly within the control of station agents to wann trains, not within reach ol visible signals, of impending danger.

In the accompanying drawings l have illustra/ted diagiapimatically a suitable embodiment of`my invention without particulal/ attention to `details.

On the-railway either between the rails l or in any other convenient location, l pro vide three rails 2, 3 and 4 respectively parallel with each other and said rails l, said rails 2, 3 and 4 extending the entire length of the system except that they are cut through at intervals as at 5, each length constituting what l will term a blockf Said railsI or contact strips 2, 3 and 4, which may be of any suitable construction, serve merely as circuit closing means for the electric circuits on thc locomotives which I will now describe. Each locomotive is equipped with. a source of supply 'fr' of electric current connect" cd at one pole with`the electric alarm bell 8, zfnd electric magnetic means 9 controlling the throttle and car brake valves and thence with the brush 10 traveling on the rails 3 and 4, the other pole being connected with the. brush 11 traveling on thc rail 2, the circuit beimr thus maintained normally open. 'lho saidhbrushes 10 and 11 are always disposed respectively to the right and left. Two locomotives entering the same block and traveling,lr in opposite directions on thc same track would immediately be warned of impending danger and automatically stopped by reason of the fact that the brushes l() ofthe locomotives so traveling would span the rails .2-3 und f--l res icctiycly, and thus close the circuits through the alarm bells 8 and electromagnetic vulve controlling means 9 of both locomotives. lt will be understood, of course, that either or both the latter devices may be used or any suitable means of signaling the train crews or automatically stopping the trains may be employed without departing from my invention, The blocks may be of any desired length, as for example, ton miles, so that trains may travel toward each other on the saine track on adjacent blocks without interference but should a station agent or towor man believe that two trains on adjacent blocks may meet adjacent the ends of said blocks, he may connect two blocks by means of wedges 13 ol' a solenoid 14 disposed in a circuit l5 controlled by a switch lo in` n station or tower whereby trains traveling in opposite directions or. two :uljaccnt blocks are` signaled and stoppedl Should two trains traveling in the s anie direction approach cach other so closely as in the estimation of the station agent or tower man render a rear end collision possible, both trains on the same block maybe stopped by closing the circuit i7 through the solenoid 1S, the armature it) of which carries circuit closing means 20 adapt-cd to connect the rails 2i, 3 and 4 with each other, said circuit being controlled by a switch 2l in the station or tower. ln the event of a washout or other accident in any block which may constitute a. source of danger tower man may by closing the circuit 17 l (iii to trains, the station or stop any train on that block and by closing smug! 15ste?- tr i es missen-t block in an obvious manner. Y

In place of thereils 2, 3 and 42 overhead wires or an equivalent suitably disposed devices may e used, and the current may be suplied either from batteries or dynemos.

claim as my invention:

In a. safety `system for railwa s, the reilway equipped with three para lel contact stnps,a signal device on the locomotive, an electric circuit controlling the seme end terminating in two brushes one of which spans two of said strips and the other of which engages the third contact strip, said circuit belng normally open and adapted to be closed by connectln seid last named strip with elth'er of the rst two, said contact strips being severed at intervals covering sections of railway track constituting blocks within which oppositely running trains on the same track cifras the signifi circuits of each other res ectively, a station or tower adjacent the ra' way electricelyt controlled means disposed between e' jacent signal blocks for coupling the same, electrically controlled means or electrically connecting the seid three contact strips with each other to close electric circuits contro ling both said electrically controlled means, and circuit closing means controlling seid circuits disposed in seid station or tower. A o

i In testimony whereof I have sined my name in the presence of two subscri ing witnesses.

JANKo KovAcEvIo.

lNitnesses:

RUNDOLPH WVM. Lo'rz, lnnononn WALLrsEn.

the signal circuit of en train in seid block 

